Filetype
In this study, the catalytic activity of wood-based catalysts produced by different activation methods was evaluated for the decomposition of hydrogen iodide (HI) as part of the sulfur-iodine hydrogen production process. The wood-based activated carbon catalysts showed strong improvement in the HI conversion compared to a blank, especially for carbon catalysts activated using H3PO4. Proximate anal
It is generally acknowledged that wetlands and barrier islands can reduce surge and waves. However, while a general qualitative understanding of these interactions is available in the scientific literature, quantification of these interactions is lacking and has previously been based on limited data of relatively poor quality. The overall aim of this study was to improve the understanding of the i
Sammanfattning Det naturvetenskapliga kunskapsläget om klimatförändringarna förbättrats ständigt genom forskningen om klimatsystemet, klimatpåverkan, klimatets variationer och förändringar samt klimateffekter. Kunskapsläget är väletablerat när det gäller den grundläggande fysiken bakom växthuseffekten, liksom att genomsnittstemperaturen vid jordytan stigit de senaste femtio åren. Det är också my
Vehicular communication channels are characterized by a non-stationary time- and frequency-selective fading process due to fast changes in the environment. We characterize the distribution of the envelope of the first delay bin in vehicle-to-vehicle channels by means of its Rician $K$-factor. We analyze the time–frequency variability of this channel parameter using vehicular channel measurements a
Purpose This paper investigates contracts of the intermodal transport market and the incentives they create for a modal shift and thus the financial and environmental efficiency of freight transport. Design/methodology/approach The research used a mixed-methods approach where qualitative case interviews and quantitative modeling was combined. Two cases of contractual relationships between a serv
Abstract in UndeterminedBackground: For 2-dye microarray platforms, some missing values may arise from an un-measurably low RNA expression in one channel only. Information of such "one-channel depletion" is so far not included in algorithms for imputation of missing values.Results: Calculating the mean deviation between imputed values and duplicate controls in five datasets, we show that KNN-based
We present a network of sites across Fennoscandia for optical sampling of vegetation properties relevant for phenology monitoring and satellite data calibration. The network currently consists of five sites, distributed along an N-S gradient through Sweden and Finland. Two sites are located in coniferous forests, one in a deciduous forest, and two on peatland. The instrumentation consists of dual-
The purpose of the current work is the comparison of a phenomenological and a laminate-based model for rate-dependent switching in ferroelectric single crystals. To this end, the phenomenological model formulation of [1] is considered. In this model, the polarization vector is treated as an internal variable. The evolution of the polarization determines the remanent strain; dependence of energy st
Voorhees et al. (Reports, 5 November 2010, p. 835) determined the structure of elongation factor Tu (EF-Tu) and aminoacyl-transfer RNA bound to the ribosome with a guanosine triphosphate (GTP) analog. However, their identification of histidine-84 of EF-Tu as deprotonating the catalytic water molecule is problematic in relation to their atomic structure; the terminal phosphate of GTP is more likely
This review article focuses on advances and technical developments of the realm of membrane extraction techniques for the analytes that are (made) amenable to gas chromatographic analysis, and sheds light on the analytical applications to biological and environmental samples. In this review, the state of the art in this growing area of membrane extraction for gas chromatography is presented and se
Objective:To assess the importance of MAPT variant p.A152T in the risk of synucleinopathies. Methods:In this case-control study, we screened a large global series of patients and controls, and assessed associations between p.A152T and disease risk. We included 3,229 patients with clinical Parkinson disease (PD), 442 with clinical dementia with Lewy bodies (DLB), 181 with multiple system atrophy (M
We present a new high delay resolution method to detect ultra-wideband (UWB) scatterers when using frequency domain measurements. Our approach makes use of the impulse response envelope amplitudes and delays measured over a distance that is larger than the region of stationarity, and detects the 2D coordinates of the channel scatterers, assuming that only single-scattering (single-interaction) pro
Denna studie har syftat till att undersöka effekten av ökat socialt ansvar bland realityprogram på tittarnas attityder. För att undersöka syftet har vi genomfört en fallstudie som studerar realityprogrammet Paradise Hotel. Programmet har antagit ett mer socialt ansvarsfullt koncept i deras nya format Paradise. I studien har semistrukturerade intervjuer genomförts för att undersöka hur tittarnas atThis study has aimed to examine the impact of increased social responsibility among reality shows on viewer attitudes. In order to investigate the aim we have conducted a case study examining the reality show Paradise Hotel. The program has adopted a more socially responsible concept in its new format called Paradise. Semi-structured interviews have been conducted in order to explore how viewers’
The purpose of this paper is to analyse the phenomenon of country branch’s communication alignment between the corporate and country-specifics, based on the example of the German development organisation GIZ and its country branch GIZ Pakistan. This includes how the communication strategy and concepts are aligned and how the alignment is negotiated and decided. The analysis is guided by the interp
An investigation into the use of statistical texture analysis in combination with ultra high-frequency ultrasound for diagnosing Hirschsprung’s disease (HD); An illness that manifests itself through the absence of ganglia cells in lower parts of the intestine. Current diagnostic techniques carry a higher risk of long-term consequences in newborns and children which enables a new avenue of research
Elförsörjningen som till huvuddel kommer från fossila bränslen uppfyller vanligen inte efterfrågan i Irak. Samtidigt som det finns goda förutsättningar och stor potential för att installera och utnyttja solel som en lösning för den bristande elförsörjningen men med omtanke som värnar om miljön. Idag har cirka 20 procent av den irakiska befolkningen ingen tillgång till el, de återstående 80 procentThe main supply of electricity from fossil fuels does not usually meet demand in Iraq. At the same time, there are good conditions and great potential for installing and utilizing environmental friendly electricity from solar energy as a solution to the lack of power supply. Today, about 20 percent of the Iraqi population has no access to electricity, the remaining 80 percent have no continuous el
In this thesis the WKB-approximation is used to simulate the tunneling current for an Esaki nanowire diode and the result is compared to data from Esaki nanowire diodes grown with MOVPE. The WKB-approximation with triangular potential barrier predicts a strong increase of the tunneling current as a function of the doping densities and at the highest doping levels it gives lower tunneling distances
This thesis examines a local low-carbon energy transition in an urban context with regard to energy justice. It takes the Vauban district in Freiburg (Germany) as a case study which has been described as a successful case of energy transition and a model for sustainable urban development. From a theoretical point of view, energy justice encompasses a fair distribution of costs and benefits of an e
Tidigare studier indikerar att ooider har förutsättningar att användas som naturliga arkiv för att undersöka variationer i oceankemin samt klimatförändringar som sträcker sig hundratals år tillbaks. Ooider är sfäriska eller ellipsoidformade karbonatkorn med en medelstorlek mellan 0.25 och 2 millimeter. Ooidens struktur kan variera, men gemensamt för dem är att de utgörs av en kärna som kan vara en
